Dredging-mac mine



.ru 9 e h s S t e e h S 3 N E L L A G a d 0 M 0 W DREDGING MACHINE.

Patents Dec. 27,1881.

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' C7J.ALLEN.

DREDGING MACHINE.

' No. 251,495. Patented Dec. 27,1881.

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G. J. ALLEN.

. DREDGING MAGHINE.

No. 251,495. Patented Dec. 27, 1881..

, R f-' A I WITNESSES NVENTOR ,ALF 'q If jeans 97 6 ATTORNEYS.

UNITED STATES PATENT OFFICE.

CHARLES J. ALLEN, OF NEW ORLEANS, LOUISIANA.

DREDGING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 251,495, dated December 27, 1881.

, Application filed August 22, 1881. (No model.)

To all whom it may concern:

Be it known that I, CHARLES J AMES ALLEN, of New Orleans, in the parish of Orleans and State of Louisiana, have invented certain new and useful Improvements in Dredging Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanyi n g drawings, and to letters of reference marked thereon, which form a part of this specification.

My invention relates to an improvement in dredging-machines, the object of the same being to provide a car or boat with aderrick for supporting the elevator-buckets, arranged to swing in a horizontal plane withoutalterin g or -in any manner disconnecting the operating mechanism, thereby avoiding the table-screws, racks, levers, &c., and allowing greater freedom of movement to cut wider and deeper than can be accomplished with the old style of dredging-machines ordinarily used.

WVith these ends in view, my invention consists in certain detailsin construction and combinations of parts, as will be more fully explained, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a side view of my improved machine with front uprights broken away. Fig. 2 is a front view of the pivoted frame with the endless belts, &c., removed. Fig. 3 is a plan view. Fig. at is a detached view, showingthe manner of connecting the buckets to the endless chains; and Fig. 5 is a detached view of the friction-clutch.

A represents the deck of a boat or platform of a car, near the front end of which the upright frame is secured. This frame consists of the four upright standards B, the upper ends of which are secured together bythe crossbeams G.

D is'a swiveled frame situated between the standards B, thelower an d upper ends of which are provided centrally with pivot-boltsE, which fit respectively in the socket E formed in the step E on the deck of the boat, and the socket E in the cross-beam 0.

F Fare the guide-spars, secured together at their forward or outer ends, rigidly connected at their rearends to the swiveled frame D,near its lower end, and connected at theirouter ends to the swiveled frame, near its top, by the rods G. These spars F F are secured together in a parallel position far enough apart to allow the endless chains H, carrying the buckets H, to pass between them without meeting any obstructions and be retarded thereby.

Extending across the frame D, near its upper end, is ahorizontal shaft, I, on which are secured the chain wheels 'J, over which the endless chains pass. This shaftIextends through the upright standards of the swiveled frame D, and is provided on its outer end with the bevel-gear wheels a, which latter mesh with the smaller bevel-wheels b, secured to the vertical shafts L,

the latter being journaled in any suitable manner to the sides of the upright standards. The lower ends of the vertical shafts Lare provided with the bevel-wheels 0, adapted to mesh with the bevel-wheels d on opposite ends of the horizontal shaft M, the latter also being journaled in the upright standards. This horizontal shaft M is also provided with a bevel-wheel, e, secured thereon nearits center, which meshes with a bevel-wheel,f, secured to the upper end of the vertical shaft N. This latter shaft N is situated in the central line of the swiveled frame D, and is journaled in suitable bearings,

in the cross-piece g and seat 9, and. is also provided with another bevel-wheel, h, which is the first of the train already described, and through which the motion is imparted to the winding-drum or horizontal shaft I, above referred to.

O is a horizontal shaft, having the bevelwheel t on one end, which meshes with the bevel-wheel h on the vertical shaft N, and a bevel-wheel, j, on the opposite end, which meshes with a bevel-wheel, e, on the countershaft 1?, the latter being also provided with a band-wheel or crank, as desired, by which motion is imparted thereto direct from the englne.

By constructing and gearing the parts as above described I am enabled to feed the crane or derrick from side to side while in operation, to increase the size of the out without altering or changing the relative position of the several different parts described.

P is a swinging frame consisting of two beams, the upper ends of which are journaled on the horizontal shaft 1, between the chainwheels J, while the lower ends are provided with chain-wheels J, around which the endless chains H wind on returning up with its loaded buckets. The beams composing this frame P are held sufficiently close together to allow them to move freely between the sides F l of the derrick. This frame I? is adapted to be elevated or lowered by the chains or ropes Q, which latter are connected to the swinging frame P at the point so, and pass upward and over the pulley m, secured in the outer and upper ends of the derrick, and from thence backward through the frame and down to the windlass R, which latter is under the control of the engineer.

The yawing or feeding the crane from side to side for the purpose of widening the cut is accomplished by means of the winch or windlass S, around which the middle of the rope T is wound several times. The ends of this rope are then passed in opposite directions around a series of horizontally-mounted pulleys, n, on the side pieces, N, and their ends are attached to the opposite sides of the derrick or crane F, so that by rotating the Windlass in either direction the frame is caused to swing around until the desired position is reached. This winch or Windlass S is rigidly secured to one end of the horizontal shaft U, while the opposite end of the said shaft is provided with a bevel-wheel, 0, adapted to mesh with the two bevel-wheels 1) 19, which latter are loosely journaled on the shaft W'. The bevel-wheels p19 are each provided on its inner face with a removable conical disk, W, made of sole-leather or other suitable material, securely bolted to the wheels by the bolts 1', and adapted when in engagement with the friction-clutch S to turn with the clutch, which latter has a longitudinal sliding movement on the shaft W, to allow it to engage with either disk W. The ends of the clutch are hollowed out or cupshaped, and adapted to fit over the disk and cause it, with its bevel-wheel, to revolve simultaneously with the clutch, the said clutch being also provided with a peripheral groove, 8, in which the bosses on the hand-lever Y work. By means of this lever Y clutch S is caused to engage either of the wheels 1) p and turn same in the direction desired. As the clutch is adapted to be applied gradually to the disks W, all sudden shocks and jarring motion to the windlass is prevented. The shaft W is situated a little behind the counter-shaft I, and can be connected thereto by gear or band wheels, as desired.

The upright frame is securely held in position by the braces T, which bind it on the front sides and behind, and also by the brace-irons s, which extend from the top of the frame B to near the stern or bow of the boat, as the case may be, and prevent any undue straining of the parts.

H are the elevating-buckets in which the earth is carried to the top of the swiveled frame D. These buckets can be of any desired size and shape, but are so connected to the endless chains as to set out and over them, and not between them, as ordinarily done. This is accomplished by forming two flanges, I), at the back of the bucket, the said flanges to be the same length as one of the chain-links, and provided with openings, through which the rivets or bolts 10, which connect the two endless chains H, pass. These rive-ts or bolts form a bed or rest for the buckets, which prevents them from falling down between the chains, and consequently prevents any straining either to the chain or buckets. 7

My improved machinery can be applied to cars as well as boats, and in either case can be provided, if desired, with conveying-belts for carrying or dumping the earth intothe boat or car, or to the sides thereof, as desired.

It is evident that numerous changes both in the construction and arrangement of the different parts might be resorted to without departing from the spirit of my invention; and hence I would have it understood that I do not limit myself to the exact construction of parts shown and described.

I am aware that it is not broadly new to combine with a swiveled frame chain-wheels, driving-gear, and an endless chain, the latter being provided with dredging-buckets and lateral chains operated by the same drum; hence I make no broad claim to such a combination 5 but,

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a dredging-machine, the combination, with an endless chain having buckets attached thereto and a swiveled frame having chainwheels and driving-gear mounted therein, of the guide-spars F F, secured at their rear ends to the swiveled frame, and chains T T, winch S, and pulleys a, substantially as set forth.

2. In a dredging-machine, the combination, with the swiveled frame, endless chain provided with buckets, and the driving-shaft O, of the shaft I, provided with chain-wheels J J and bevel-gears b c, shaft M, provided with bevel-gears e d d, and shaft N, provided with gear f h, substantially as set forth.

3. The combination, with the endless chain H, of the bucket H, the latter constructed with flanges or lips I), located near the upper end of the bucket, and extending rearwardly therefrom and fastened to the chain, whereby the depending portion ofthe bucket may be located close to the chain, substantially as set forth.

4. The combination, with the bevel-gearsp 11, each provided with a conical disk, W, made of leather or equivalent material, and the bevelgear 0, of the laterally-adjustable clutch S, constructed with cup-shaped ends, substantially as set forth.

5. The combination, with the deck or platform havin g the upright frame secured thereon near one end thereof, a-swiveled derrick or frame IIS 10 mesh, as described, and operate the endless chains carrying the buckets, substantially as set forth.

In testimony that'I claim the foregoing I have hereunto set my hand and seal this 4th day of August, 1881.

CHARLES JAMES ALLEN. [L.S.]

Witnesses:

MICHE V. DEJAY, L. s.] JAS. FALEY. L. s.] 

